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Clinical Pediatrics
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Serum Group I Pepsinogens in Children with Recurrent Abdominal Pain

William M. Liebman

Department of Pediatrics, University of California School of Medicine, San Francisco, California

Recurrent abdominal pain (RAP) is a common, frustrating problem in child hood. A commonly mentioned cause has been acid hypersecretion without evidence of actual ulceration. Recently, a radioimmunoassay specific for group I pepsinogens (PgI), one of two immunochemically distinct groups of human pepsinogens or precursor zymogens of pepsin, has been developed. Serum PgI levels have been demonstrated to reflect the acid secretory capacity of gastric mucosa, specifically the maximal and peak acid outputs (MAO, PAO), as well as the basal acid output (BAO), thus providing an accurate, tubeless determination of acid secretion. The present study of children with and without RAP has revealed no significant difference in serum Pgl levels in these groups. These results suggest that acid hypersecretion cannot be demonstrated in RAP; therefore its relationship to RAP is questionable.

Clinical Pediatrics, Vol. 20, No. 5, 324-326 (1981)
DOI: 10.1177/000992288102000503
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